.NORTH AMERICAN INVERTEBRATE PAL^ONIOLOGY. 577 



soni, Trematospira h'frequeas, EhynchoncUa f occidens, R. [Lciorhynchus) 

 nevadensi.s, Pentamerus lotis, Cryptonella ? circula, G. pinoncnsis, Ptcrinea 

 neicarhousis, Leptodesma trantivcrsa, Llmoptera sarmcnticia, MytUarca 

 duhia, Modiomorpha altiforme, M. oblonga, M. obtusa, JS^uctda rescueitsis, 

 JJystacteUa insularis, Meyambonia occidualu, Kyassa i)arva, Grammy.sia 

 minor, Saitgulnolitefi / combousi.s, S. f gracilis, Conocardiuin nevadensis, 

 Poridonomya laevis, P. dtvonica, Microdon [dypricardella) macrostriatiiH, 

 Anodontopsis amygdalaeformis, Schizodiis [Cytherodon) orbicularis, Platy- 

 ceras conradi, P. undulatum, P. ihetiforme, Euompludus eurekensis, Eccu- 

 liomphaJuH devonicus, Stra2)aroUus neicarkensis, Platysclrisma? 2IcCoyi, 

 P. 1 amhiijuum, Callonema occidentalis, Loxonema curelcensis, L. nobile, 

 L. approximatum, Bellerophon perplexa, B. combsi, Scoliostoma americana, 

 M&toptomaf devonicu, Coleolus laevis, Gomplioceras suboviforme, Cyrtoceras 

 nevadense, Goniatites desideratus, Beyrichia {primitia) occidentalis, Leper- 

 ditia rotundata, Dalmanites meelm. From t be Carboniferous tifty-oiie new 

 species are described: Biscinna connata, ^pirifcra annecfaits, S. desider- 

 ata, Rhynchonclla eiirckcnsis, R. tliera, ATiculopecten haguei, A. eurekensis, 

 A. pcroccidens, A. pintoensis, A. affinis, Strebloptera similis, Crcnipecten 

 Jiallanus, Pterinopecicn lioosacensis, P.spio, Pterinea pintooisis, Ptychopte- 

 ria protoforme, Pinna inexpectans, P. cosimilis, Myalina congeneris, 21. ne- 

 mesis, M nessus, Modiola nevadensis, Modiomorpha ambigna, M. ? desiderata, 

 M. ? pintoensis, Nucula insiilaris, N. levatiforme, Solenomya curta, Macro- 

 don triDicatm, Edmondia medon, E. f circidaris, Pleuroplwrus meeki, 

 Sanguinolites retvsns, S. simplex, S. salteri, S. ? naenia, 8. striatus, 2licro- 

 don {cypricardclla)connatus, Gardiola f fJicostata, Schizvdtis deparcus, JS. 

 ciirtiforme, S. 2nnto€nsis, Platyceras occidens, P. piso, Platyostomainorna- 

 tiim, Bellerophon majuscidus, Loxonema bclla, Plcurotomaria nevadensis, 

 2Ictoptoma perocvidens, HijOlitlies carbonaria, Orthoceras curekcnsis. 



Tbe discovery in the Devonian of tbe interior of a dorsal valve of a 

 rather large species of Lingula, Lingida u-hitci, afforded the means of 

 comparison of the same parts of the shell with a Silurian and recent 

 species of this genus, and proves the great structural similarity of tbe 

 three species so widely separated in geological time. 



Walcptt, C. D. — On the Cambrian Faunas of North America. Pre- 

 liminary studies. (Bull. U. S. Geol. Surv., vol. ir, No. 10, pp. L'83-354, 

 pis. i-s. Washington, 1884.) 



Tbis work consists of three parts ; the first " a revicAv of tbe fauna of 

 the Saint John formation, contained in the Hai'tt collection." Tbis 

 work is not meant to encroach on Mr. Mathew's work, iuid contains 

 merely illustrations and descriptions of specimens in tbe TTartt collec- 

 tion belonging to Cornell University, and Mr. Mathcw proposed speci- 

 fic names for tbe new species excepting one, Harttia mathewi, the typo 

 t)f the n. g. Harttia Wii]iioU, a very curious form . belonging to tbe 

 Calypira'ida'. Tlie new-<>pecies are Lingvla f dinvsoni 3Iatbew. Hyolithes 

 danianus, iiiid //. micmac Matliew. Conocoryphe icalcotN Mntliew is 

 also me::! itmcd Iktc for tbe first time. The new subgenus Salteria is i)ro- 

 S. Mis. 33 37 



